**Author details**

Masanori Kawasaki1\*, Shinichi Yoshimura2 and Kiyofumi Yamada2

\*Address all correspondence to: masanori@ya2.so-net.ne.jp

1 Department of Cardiology, Gifu University Graduate School of Medicine, Gifu, Japan

2 Department of Neurosurgery, Gifu University Graduate School of Medicine, Gifu, Japan
